Well-pipe puller.



No. 719,444. PATENTED FEB. 3, 1903.

' J. A. DE VORE.

WELL PIPE FULLER.

APPLICATION FILED MAR. 21, 1902.

R0 MODEL.

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lfiorgcys NlTBD STATES JAMES A. DE VORE, OF MAOKSVILLE, KANSAS.

WELL-PIPE PU LLER.

SEECIFICATION forming part of Letters Patent N0. 719,444, dated February3, 1903.

Application filed March 21, 1902. Serial No. 99,380. (No model.)

T0 at whom it may concern.-

Be it known that 1, JAMES A. DE VORE, a citizen of the UnitedStates,residing at Macksville, in the county of Stafford and State ofKansas, have invented a new and useful \Vell-Pipe Puller, of which thefollowing is a specification.

This invention relates more particularly to devices employed for thepurpose of removing well-tubing from driven wells, but which may beemployed for any purpose where it is required to grip a pipe or rod.

The object of the invention is to produce a device whereby the pipe ortube may be gripped with sufficient force to draw it from the ground andwithout crushing or bending the pipe.

Further objects of the invention will appear in the followingdescription, and the novel features will be particularly specified inthe claims.

In the drawings illustrative of the invention, Figure 1 is a sideelevation of the device complete. Fig. 2 is a plan view of the grippingportion of the device. Fig. 3 is a transverse section on theline to x ofFig. 1.

The device may be employed to grip and elevate any size of pipe and isadjustable to fit difierent sizes of pipe.

The pipe is represented at and the derrick by which the device issupported at 11, the derrick being of the usual tripod form, assh0wn,with a clevis 12, from which the device will be suspended.

The grip mechanism consists of two jaws 13 14, reversely disposed onopposite sides of the pipe 10 and having hardened-metal linings or gripplates 15 16, preferably roughened or serrated to increase the grip. Thejaws 13 14 are pivotally connected at 17 18 to two reversely-curvedlever-arms 19 20, the lower ends of the levers being coupled to straps21 22 by bolts 23 24, as shown. The upper ends of the lever-arms arecoupled adj ust-ably to slotted straps 25 26, as shown, by bolts 27 28.The straps will be employed in pairs, with one strap of each pair onopposite sides of the levers and pipe and curving outward where theypass the pipe, as indicated at 29 30, to avoid coming incontact with it,so that while firmly supporting the levers and jaws the jaws alone willengage the pipe.

The slots 31 32 in the straps 25 permit the free lateral movement of thelever-arms, while at the same time holding them in proper position withrelation to the jaws and pipe. Connected flexibly to the upper ends ofthe levers 19 20, as by clevises 33 34, are links 35 36, unitedcentrallyto a ring 37, the latter in turn connected, as by a link 38, to a hook39 in the end of an operating-lever 40. On the upper side of the lever40 is a fulcrumpiate 41, havingaseries of graduated recesses or notches42 and adapted to support a clevis 43, to which the suspension-link 44is coupled. The upper end of the link 44 is coupled flexibly, as by aclevis 45, to the suspension means 12 of the derrick 11, as shown.

The derrick may be of any approved form, but will generally be of theusual tripod form, as shown. By this'simple means a downward movement onthe longer end of the lever 40 will elevate the shorter end andcorrespondingly elevate the gripping mechanism, this causing the links35 36 to exert an inward strain upon the lever-arms 19 20, and thusexert a strong inward force against the jaws 13 and 14 and cause them totightly grip the pipe 10 and draw it upward.

The grip of the jaws will be sufficient to effectually prevent anyslipping upon the pipe, and the stronger the upward pull the firmer willbe the grip.

The graduated notches 42 in the fulcrumplate 41 will enable the leverageto be increased or decreased, as required.

The straps 21 and 22 and the straps 25 and 26, each having theoutwardly-curved portions 29 30 embracing the pipe, form guides to thedevice,and insure the properhorizontal movement, and effectually preventany lateral strains upon the jaws, and consequently also materiallyassist in preventing any lateral strainsupon the pipe.

The straps 21 22 will be provided with extra holes 45 46, so that thedistance between the jaws 13 14 may be increased and decreased to adaptthedevice to pipes of different sizes.

By this simple device the pipe is grasped equally from both sides, andthe upward pull is at all times in a vertical or straight upwarddirection. Hence the pipe will not be subjected to lateral or bendingstrains. This is a very important consideration, especially whenemployed to pull drive-well tubing, as this tubing is generally drawnfor the purpose of cleaningior repairs and is then again driven into theground, and any device which would bend or deflect the pipe would bevery objectionable. The jaws 13 14 being of considerable lengthdistribute the strains over so large an area of the pipe as to obviateany tendency to crush the pipe, no matter how great a strain may berequired to draw it upward.

All the parts are simple in construction, and can be operated by anyperson, and will not require skilled operators to handle it.

The proportions may be changed and the device modified in minor detailswithout affecting the operation or in any manner changing the nature orscope of the invention.

Having thus described my invention, what I claim is 1. A pipe or rodgripping device, comprising jaws reversely disposed on opposite sides ofthe pipe, lever-arms pivotally united centrally to said jaws, strapsembracing opposite sides of said lever-arms below said jaws andpivotally connected thereto and reversely curved at their centers toencompass opposite sides of and form a guide to the pipe, linksconnecting said lever-arms above said jaws, means for flexibly couplingthe upper ends of said links and means to forcefully move saidlever-arms upwardly and inwardly, substantially as described.

2. A pipe or rod gripping device comprising reversely-disposed jaws onopposite sides of the pipe, lever-arms pivotally united centrally tosaid jaws, straps embracing opposite sides of said lever-arms and pipebelow said jaws, straps having longitudinal slots and embracing oppositesides of said leverarms and pipe above said jaws, bolts engaging saidlever-arms through said slots, links flexibly coupling the upper ends ofsaid leverarms, and means for forcibly moving said lever-arms upwardlyand inwardly, substantially as specified.

3. In a pipe or rod gripping device, reversely-disposed jaws on oppositesides of the pipe, lever arms pivotally connected centrally to saidjaws, straps embracing opposite sides of said lever-arms below said jawsand reversely curved at their centers to encompass the pipe, strapshaving longitudinal slots and embracing opposite sides of saidlever-arms and pipe above said jaws and reversely curved at theircenters to encompass the pipe, bolts engaging said lever arms throughsaid slots, means flexibly connecting the upper ends of said lever-arms,and means coupled to said flexible connection and operating to forciblymove said lever-arms up- JAMES A. DE VORE.

Witnesses: J. B. WARE, W. L. JENNINGS.

